﻿//#define _CRT_SECURE_NO_WARNINGS
////作者：宋安康
//#include<stdio.h>
//int main() 
//{
//	printf("hello world\n");
//	return 0;
//}

#include<iostream>
using namespace std;  //命名空间
//std::

int main() 
{
	cout << "hello world" << endl;
	cout <<"宋安康" << endl;

	const int a = 10;
	cout <<a << "\t" <<10<< endl;
	int* p = const_cast<int* >( & a);
	*p = 20;
	cout << a<<"\t" << *p << endl;

	int b, c;
	cin >> b >> c;
	cout << b << "\t" << c << endl;

	system("pause");
	return 0;
}